▎ 摘　　要

NOVELTY - Porous sound absorbing material having optimal nanomaterial impregnation structure comprises porous member and nanomaterials impregnated into porous member. USE - The porous sound absorbing material is useful for adjusting the modulus of elasticity and heat transfer and for large porous materials. ADVANTAGE - The porous sound absorbing material has optimal nanomaterial impregnation structure, minimizes use of nanomaterials, maximizes sound absorption performance and reduces noise by applying new impregnation technology. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing porous sound-absorbing material having optimal nanomaterial impregnation structure comprises (a) preparing porous member having specific thickness, (b) wetting porous member with a nanomaterial solution containing nanomaterials and (c) inserting porous member into open surface of vacuum chamber and impregnating nanomaterial into porous member by vacuuming the inside of vacuum chamber.